. >> reporter: and on thursday, the day before newtown, the michigan state legislature passed a bill that will allow concealed weapons in, among other places, schools. the governor is still deciding whether to sign it. are we headed toward an environment in this country where we have for the rest kindergarten? >> we don't need to train kindergarteners to throw pencils and back packs at armed intruders and to have a swat team in and a metal detector at every door. >> reporter: kenneth trump is president of national school safety and security services in cleveland. >> parents want to know two things. number one, what steps did you have in place to prevent an incident, and how well prepared were you to respond when a crisis occurs. many incidents can and have been prevented in school violence. and we've gotten a lot better since columbine. unfortunately there will still be those that slip through the cracks. >> the front glass has been broken and they're unsure why. >> reporter: adam lanza, it turns out, broke into sandy hook elementary school. what will become of the terrified children